Chuck-coupling.



N C W! m & h ///7 Patented Dec. 12, 1916.

W. A. SMITH. CHUCK COUPLING.

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' Patented Dec. 12,1916.

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NARA MEIER,

WILLIAM A. SMITH, OF DENVER, COLORADO, ASSIGNOR TO THE DENVER ROG KDRILL MANUFACTURING WARE.

COMPANY, OF DENVER, COLORADO, A CORPORATION 015 DELA- CHUCK-COUPLING.

IROORE I,

Specification oi Letters Patent.

Patented llllec. 12, IOIO.

Applicationfiled August 21, 1914. Serial No. 857,917.

To all whom it may concern Be it known that l[, WVILLIAM A. SMITH, acitizen of the United States, residin at Denver, in the county of Denverand tate of Colorado, have invented new and useful chinein the chuck ofsuch machine.

The primary object. is to provide a simple and practicable device of anovel charac-' tor for the above purposes.

The preferred embodiment of the invention, is illustrated in theaccompanying drawings, wherein Figure 1 is a longitudinal sectional viewthrough the coupling. Fig. 2 is a cross sectional View on the line 22 ofFig. 1. Fig.

3 1s a cross sectional view on the line 33 of Fig. 1. Fig. 4 is a detailperspective view of the members in coupled relation, with portionsthereof broken away. Fig. 5 is a sectional view taken on the line 55 ofFig. 2, looking in the direction of the arrow and with the detachablemember partially withsocket is formed with a bore 15, through drawn.

Similar reference numerals designate cor responding parts in all thefigures of the drawings. j I

In the embodiment illustrated, a tubular support 6 is disclosed, havinga tubular plug 7 in one end and containing a rotatable member 8, thismember being provided with gear teeth 9 at one end, by which it can besuitably rotated.

The member 8 projects beyond the Support '6, and is provided witha'longitudinal socket 110 that is angular in cross section preferablysquare; This angular socket opens through the frontor projecting end ofthe member 8. Said member 8 is also provided with longitudinallyelongated slots 11 out entirely through the same, and communicating withthe socket in rear of the open mouth thereof. l-These slots are faces 12constitute stop shoulders, as hereinafter pointed out.

The other member to be coupled is desig nated 13, and while it may be ofany desired cross sectional shape, in the embodiment off shown, it iscylindrical and has an angular enlargement 1d, the cross sectional areaof which corresponds substantially to that of the socket! 10. Thisangular enlargement 14: will thus pass through the open mouth of thesocket 10, and when in line with the slots 11, it can be partiallyrotated in said socket, because the inner ends of the slots constitute'fclearance spaces, as above described. The amount of rotation is,however, limited by the Walls 12 of the slots which constitute stopshoulders in the path of the; faces of said angular enlargement. It willfurthermore be noted that when the angular enlargement thusbears-against said stop shoulders 12, the corners will be out of linewith the socket and the two members 8 and 13 are interlocked againstwithdrawal from each other. I It will alsobe seen by reference to Fig. 1that the slots 11 are considerably longer'than the enlargement 14, sothat the two members 8 and 13' are capable of a limited relativemovement. The portion of. the. member 8 in rear of the All which therear end of the member 13 probe apparent to those skilled in the art,with V out further description, and it will be understood that variouschanges in the size, shape, proportion and minor details of constructionmay be resorted. to without departing from the spirit or scope of theinvention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is:-

1. In a structure of the character set forth, two members to be coupled,one of said members having an open-ended socket that is angular in crosssection, and internal recesses in the walls of said socket, form mg stopshoulders, the other member havmg an angular portion that enters theopen end of ice llil

the socket and is partially rotatable therein,

the stop shoulders engaging said angular portion and limiting therotation of the same in the socket.

2. In a structure of the character set forth, two members to be coupled,one of said members having a socket provided with an angular mouth, andinternal recesses in the walls of said socket,,forming stop shoulders,the other member having an angular portion that substantiallycorresponds to the angular mouth of the socket and enters the same, saidangular portion being partially rotatable within the socket and bearingagainst the stop shoulders, to limit such rotation, and said member whenso rotated being interlocked against withdrawal from the socket.

3. In a structure of the character set forth, two members to be coupled,one of said mem-' bers having a socket that is of angular cross sectionan having an open mouth and being of substan ially the same crosssectional area in rear of the'mouth, said socket having internalrecesses forming clearance spaces, and stop shoulders, the other memberhaving an enlarged angular portion that is movable through the angularmouth of the socket into the same and is partially rotatable within thesocket and recesses, abutting against the stop shoulders to limit suchrotation, said recesses being longer than the angular enlairgement topermit a limited longitudinal r W 4:. In a structure of the characterset forth, two members to "be coupled, one having a socket provided withan open mouth and a slot.cut into said member'and intersecting thesocket, forming a stop shoulder, the other member having a portionentering the socket and partially rotatable therein, said latter memberhaving a portion that abuts against the wall of the slot and limits thesaid rotation.

5."In a structure of the character set forth, two members to be coupledone having a socket provided with an open mouth, and a tangential slotcut into said member and intersecting the socket, forming a clearancespace and a stop shoulder, the other ,nesses.

member having an angular portion that enters the socket and is partiallyrotatable therein and in the slot, said latter member abutting againstthe stop shoulder.

6. In astructure of the character setforth, two members to be coupled,one having a socket that is angular in cross section, and

slots cut into the member and intersecting the Walls of said socket,forming clearance spaces and stop shoulders,-the other member having anenlarged portion that is angular in cross section and removably engagesin the socket, said angular portion being rotatable within the socketand in the slots and abutting against the walls of said slots.

7 In a structure of the character set forth, two members to be coupled,one having a socket that is angular in cross section, and slots cutthrough said member and intersecting the walls of the socket at an acuteangle, the other member having an angular portion that detachablyengages inthe socket andis, partially rotatable therein and in theslots, the walls of said slots constituting stop shoulders against whichthe angular faces of the last mentioned member abuts.

8. In a structure of the character set forth, a rotatable member havinga socket that is angular 'in cross section and opening through one endof said member, and elongated slots cut through the member andintersecting the walls of the socket at an acute angle thereto, formingclearance spaces and stop shoulders, and another member having anangular enlargement, the cross sectional area of which correspondssubstantially to 'the cross sectional area of the socket, said.

enlargement removably engaging in the socket and being partiallyrotatable therein, the face of said enlargement when so rotated abutingagainst the stop shoulders and the angular enlargement being theninterlocked in the socket against withdrawal.

In testimony whereof I have'hereunto set my hand in presence of twosubscribing wit- WILLIAM A. SMITH. Witnesses:

WILLIAM H. LEONARD,

Jnssm TURNER.

